Abstract
The operating speed range of interior permanent magnet synchronous motor (IPMSM) is closely related to the motor parameters. Based on the mathematical model of the motor in d-q coordinate system, and fully considering the two constraints of actual operation: voltage limit ellipse and current limit circle, a control method of maximum torque per ample (MTPA) and flux weakening is proposed. In the low-speed region, the problem that the given value of d-q axis current in the MTPA control cannot be obtained is solved by using the curve segmentation fitting, and the given value of the d-q axis current at different speeds is obtained. In the high-speed area, the voltage loop is used to modify the MTPA instruction, and flux weakening control is realized. The experimental results show that the proposed MTPA and flux weakening control method in this paper can satisfy the rated operating state of IPMSM, improving the load capacity, broadening the speed range, and possessing excellent steady and dynamic performance.
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Du, H., Yang, S., Liu, Y., Liu, K., Xu, C. (2022). Design and Implementation of MTPA and Flux Weakening Control for IPMSM. In: Jia, L., Qin, Y., Liang, J., Liu, Z., Diao, L., An, M. (eds) Proceedings of the 5th International Conference on Electrical Engineering and Information Technologies for Rail Transportation (EITRT) 2021. EITRT 2021. Lecture Notes in Electrical Engineering, vol 864. Springer, Singapore. https://doi.org/10.1007/978-981-16-9905-4_47
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DOI: https://doi.org/10.1007/978-981-16-9905-4_47
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